Activate Your Card

Credit Card Information

You're only a few clicks away from activating your Citi credit card. Fill in the information below to get started.

Note: If you are an Authorized User for this credit card account you'll need to have the Primary Cardmember's date of birth and the last 4 digits of their Social Security Number. If they don't have a Social Security Number you'll need their billing address zip code.

Enter Your Account Information

Credit Card Number:

Enter the number on your credit card without spaces or dashes.

Credit card number info is available here.

Your Name as it Appears on Your Card:

Name on the card info is available here.

Please enter the name exactly as it appears on your card. Do not include punctuation if it is not on your card.

Security Code:

Security code info is available here.

On Mastercard and Visa cards the Security Code (CVV) is the last 3 digits on the back of your card. On American Express cards the Security Code (CSS) is the 4 digits on the front of your card.